Certificate of Course Completion CCNA Exploration: Network Fundamentals ® During the Cisco Networking Academy course, administered by the undersigned instructor, the student was able to proficiently: Explain how communication works in data networks and the Internet Analyze the operations and features of the network layer protocols and services and explain the fundamental concepts of routing Recognize the devices and services that are used to support communications across an internetwork Design, calculate, and apply subnet masks Explain the role of protocols in data networks Explain the role of physical layer protocols and services Describe the importance of addressing and naming schemes at various layers of data networks Build a simple Ethernet network using routers and switches Describe the protocols and services provided by the application layer in the OSI model and describe how this layer operates in sample networks Describe the operation of protocols at the data link layer Use Cisco CLI commands to perform basic router and switch configuration and verification Analyze the operations and features of the transport layer protocols and services Peralta Troncoso Fabian Alexander Student SENA Santa Marta Academy Name Santa Marta May 21, 2011 Location Date DEL CASTILLO LOZANO, JULIO RAFAEL Instructor Instructor Signature